we're gonna use an electric motor. we're gonna hook up that gasoline engine, and the two of them together will give us unbelievable efficiency, and not only that, but the car will run extremely clean. >> this might even be more ghetto than usual. we found milk crates. i think we're gonna build the, uh, the prototype battery box out of milk crates, so it's a new low for us. >> so, we have to get everything in the car, the battery packs, make sure the motors are running, just to make sure that we can test it out before the competition. >> there's a little mathematical formula that tells us how much current this is gonna put out. it's gonna put out as much as it can. >> we've got to be very careful how we assemble this battery pack because once we put a few batteries together and hook them together, there's enough voltage there to actually kill somebody. >> we don't have million dollar computers that run cad software simulations. we don't have 70 engineers like cornell university, and you can assign 20 this and 20 that. >